Augite and Austinite Physical Properties

Augite

Austinite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

Easily soluble in cold dilute HCl

1.3 Durability

Not Available

1.4 Specific Gravity

3.19-3.564.12

1 7.18

1.5 Fracture

Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal

Brittle, Uneven, Brittle, Uneven

1.6 Cleavage

{110} Perfect, {010} Indistinct

Good in two directions parallel to the prism faces {110}

1.7 Mohs Hardness

5.5-64-4.5

2 10

1.8 Chemical Composition

(Ca,Na)(Mg,Fe,Al,Ti)(Si,Al) 2O 6Anthony et al , Handbook of mineralogy (2001)

CaZn(AsO4)(OH)

Augite and Austinite Chemical Formula

While comparing Augite and Austinite physical properties, the important data you should know is its chemical composition. Since chemical formula defines the molecular structure of the crystal, most of the physical properties like color, tenacity, solubility are governed by Augite and Austinite chemical formula.

Chemical formula of Augite- (Ca,Na)(Mg,Fe,Al,Ti)(Si,Al) 2O 6Anthony et al , Handbook of mineralogy (2001)
Chemical formula of Austinite- CaZn(AsO4)(OH)

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Augite and Austinite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Augite and Austinite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Augite and Austinite Optical Properties during the identification of gemstone. Specific gravity of Augite is 4.12 whereas that of Austinite is 4.12.